CN113060090B

CN113060090B - Head safety airbag of front row seat of automobile and automobile

Info

Publication number: CN113060090B
Application number: CN201911412993.2A
Authority: CN
Inventors: 王挺; 孟强; 马建飞
Original assignee: Autoliv Development AB
Current assignee: Autoliv Development AB
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2023-11-28
Anticipated expiration: 2039-12-31
Also published as: KR20220112855A; CN113060090A; US20230015426A1; JP7423777B2; EP4086122A4; WO2021135794A1; EP4086122A1; JP2023504102A

Abstract

The invention discloses a head-top safety airbag of a front seat of an automobile, which comprises a supporting air chamber and a protecting air chamber which are arranged on the roof of the automobile; the support air chamber is unfolded from the roof toward the instrument panel when unfolded; the protection air chamber is communicated with the support air chamber, and after the support air chamber is unfolded, the protection air chamber is unfolded from the support air chamber towards the direction of a human body; a first protection space is reserved between the support air chamber and the protection air chamber on one side facing the human body, and the first protection space corresponds to the head of the human body and is used for protecting the head and neck of the human body. The invention also provides an automobile, which comprises a roof and an instrument board, and further comprises the head airbag of the automobile front seat, wherein the upper end of the supporting air chamber is connected with a gas generator. The invention can avoid the injury of passengers under the working condition of leaving the position of the children and the working condition without load.

Description

Head safety airbag of front row seat of automobile and automobile

Technical Field

The invention relates to the technical field of safety airbags, in particular to an automobile front seat head safety airbag and an automobile.

Background

It is impossible for the existing car front overhead seat airbag to avoid serious injury to passengers in the Out of Position condition (OOP) of children. And under the working condition without a safety belt load, the common overhead safety air bag can cause serious injury to the neck and the head of the dummy.

Therefore, there is a need for a front seat head airbag for a vehicle and a vehicle that can avoid injury to passengers in a child off-position condition and a no-load condition.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an automobile front seat head safety airbag and an automobile, wherein the automobile front seat head safety airbag and the automobile can avoid injury of passengers under the working condition that children are away from a position and the working condition without load.

The technical scheme of the invention provides an automobile front seat head top safety airbag, which comprises a supporting air chamber and a protection air chamber which are arranged on a vehicle roof;

the support air chamber is unfolded from the roof toward the instrument panel when unfolded;

the protection air chamber is communicated with the support air chamber, and after the support air chamber is unfolded, the protection air chamber is unfolded from the support air chamber towards the direction of a human body;

a first protection space is reserved between the support air chamber and the protection air chamber on one side facing the human body, and the first protection space corresponds to the head of the human body and is used for protecting the head and neck of the human body.

Further, the support plenum includes a first plenum and a second plenum;

the protection air chamber comprises a third air chamber and a fourth air chamber, the upper ends of the first air chamber and the second air chamber are connected together, the first air chamber and the second air chamber are branched from the upper ends and then are respectively connected with the outer sides of the third air chamber and the fourth air chamber, and the third air chamber is communicated with the inner side of the fourth air chamber;

the first protection space is formed between the bifurcation section of the first air chamber and the second air chamber and the side of the third air chamber and the side of the fourth air chamber facing the human body.

Further, the first air chamber and the second air chamber are all round tubes, and extend downwards along the windshield from the roof when the air chambers are unfolded.

Further, the lower ends of the first air chamber and the second air chamber are unfolded to be in contact with the instrument panel, and the middle sections of the first air chamber and the second air chamber are communicated with the third air chamber and the fourth air chamber.

Further, a first air inlet is arranged between the middle section of the first air chamber and the third air chamber, and a second air inlet is arranged between the middle section of the second air chamber and the fourth air chamber.

Further, a circle of sewing thread at the connection position of the inner sides of the third air chamber and the fourth air chamber is positioned on a vertical plane, and the length of the sewing thread is smaller than the maximum circumference of the third air chamber and the fourth air chamber.

Further, a connecting piece is further arranged at the joint of the inner sides of the third air chamber and the fourth air chamber, a plurality of vent holes are formed in the connecting piece, the vent holes are communicated with the third air chamber and the fourth air chamber, and the edge of the connecting piece is connected with the third air chamber and the fourth air chamber in a sewing mode to form the sewing thread.

Further, a second protection space is reserved between the support air chamber and the protection air chamber at one side far away from the human body, and the second protection space is used for reducing the damage to children.

Further, the supporting air chamber comprises a first air chamber and a second air chamber, wherein the upper ends of the first air chamber and the second air chamber are connected together and are respectively connected with the outer side of the protecting air chamber after being branched from the upper ends;

the lower ends of the first air chamber and the second air chamber and the protection air chamber leave the second protection space at one side far away from the human body.

The invention also provides an automobile, which comprises a roof and an instrument board, and further comprises the head airbag of the automobile front seat, wherein the upper end of the supporting air chamber is connected with a gas generator.

After the technical scheme is adopted, the method has the following beneficial effects:

in the invention, the first protection space is reserved between the supporting air bag and the protection air bag at one side facing the human body, and corresponds to the head of the human body and is used for protecting the head and the neck of the human body. The first protection space is reserved with enough buffer space for the head of a human body, the head of the human body can sink into the first protection space after the forward collision, and the neck and the head are prevented from being severely injured under the working condition of no lacing load.

Drawings

The present disclosure will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present invention. In the figure:

FIG. 1 is a perspective view of an overhead airbag for a front seat of an automobile in accordance with one embodiment of the present invention;

FIG. 2 is a perspective view of another view of an overhead airbag of a front seat of an automobile in accordance with one embodiment of the present invention;

FIG. 3 is a view showing a state of use of an airbag for a head of a front seat of an automobile according to an embodiment of the present invention;

FIG. 4 is a rear view of an automotive front seat overhead airbag in accordance with one embodiment of the present invention;

fig. 5 is a cross-sectional view of an embodiment of the invention at a connecting tab of an airbag for the headliner of a front seat of a vehicle.

Reference numeral control table:

a human body 100, a front seat head airbag 10 of an automobile, a roof dashboard windshield 40;

support air chamber 1: a first air chamber 11, a second air chamber 12;

protective air chamber 2: a third air chamber 21, a fourth air chamber 22;

a first protection space 3, a sewing thread 4 and a second protection space 6;

and a connecting sheet 5: a vent hole 51.

Detailed Description

Specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

It is to be readily understood that, according to the technical solutions of the present invention, those skilled in the art may replace various structural modes and implementation modes with each other without changing the true spirit of the present invention. Accordingly, the following detailed description and drawings are merely illustrative of the invention and are not intended to be exhaustive or to limit the invention to the precise form disclosed.

Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in the present specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed according to different positions and different use states thereof. These and other directional terms should not be construed as limiting terms. Specifically, the front and rear of the present invention are based on the orientation of the entire vehicle.

As shown in fig. 1, an airbag 10 for the head of a front seat of an automobile comprises a support air chamber 1 and a protection air chamber 2 which are arranged on the roof of the automobile;

the support air chamber 1 is unfolded from the roof toward the instrument panel when unfolded;

the protection air chamber 2 is communicated with the support air chamber 1, and after the support air chamber 1 is unfolded, the protection air chamber 2 is unfolded from the support air chamber 1 towards the direction of the human body 100;

a first protection space 3 is reserved between the support air chamber 1 and the protection air chamber 2 at one side facing the human body 100, and the first protection space 3 corresponds to the head of the human body and is used for protecting the head and the neck of the human body 100.

Specifically, as shown in fig. 1, the upper end of the support gas chamber 1 is directly connected to a gas generator, and the support gas chamber 1 fills the gas generator into the protection gas chamber 2. Therefore, the supporting air chamber 1 plays a role of guiding air and supporting the protecting air chamber 2, so that the protecting air chamber 2 can be rapidly unfolded towards the human body 100 to protect the human body 100.

The front seat head airbag 10 of the front row is folded and accommodated in the roof of the vehicle before inflation. When the vehicle is involved in a forward collision, the inflator inflates the front seat head airbag 10 of the vehicle. Firstly, the supporting air chamber 1 is unfolded, the supporting air chamber 1 is punched out from the roof of a vehicle, and the supporting air chamber is unfolded obliquely downwards and forwards (the vehicle head); after the support air chamber 1 is unfolded, the protection air chamber 2 starts to be unfolded and inflated, and the protection air chamber 2 is unfolded from the front of the corresponding human body towards the human body 100.

In the present embodiment, as shown in fig. 3 to 4, a first protection space 3 is formed between the support air chamber 1 and the protection air chamber 2, the first protection space 3 being located on the side toward the human body 100, i.e., on the side toward the rear of the vehicle body. When the human body 100 is in a forward collision, the protection air chamber 2 is in contact with the chest of the human body, the head of the human body is sunk into the first protection space 3, and the first protection space 3 provides a buffer space for the head and the neck of the human body under the working condition without a safety belt load for reducing the injuries of the neck and the head.

Further, as shown in fig. 1, the support air chamber 1 includes a first air chamber 11 and a second air chamber 12;

the protection air chamber 2 comprises a third air chamber 21 and a fourth air chamber 22, the upper ends of the first air chamber 11 and the second air chamber 12 are connected together, and are respectively connected with the outer sides of the third air chamber 21 and the fourth air chamber 22 after being branched from the upper ends, and the third air chamber 21 is communicated with the inner side of the fourth air chamber 22;

the first protection space 3 is formed between the branched sections of the first air cell 11 and the second air cell 12 and the sides of the third air cell 21 and the fourth air cell 22 facing the human body.

The upper ends of the first and second air cells 11 and 12 are directly connected to a gas generator, which starts to inflate from the upper ends of the first and second air cells 11 and 12. The lower ends of the first air chamber 11 and the second air chamber 12 are closed ends and extend to the instrument panel.

The upper ends of the first air chamber 11 and the second air chamber 12 are connected together and then branched to form a structure similar to a crotch, and the branched first air chamber 11 and second air chamber 12 are connected to the outer sides of the third air chamber 21 and fourth air chamber 22, respectively.

The "outer side" and the "inner side" herein are "outer sides" away from the center of the third air chamber and the fourth air chamber, and "inner sides" near the center of the third air chamber and the fourth air chamber.

The first air chamber 11 and the second air chamber 12 are connected to the outside of the third air chamber 21 and the fourth air chamber 22, and the space of the first protection space 3 can be increased.

The first protection space 3 is located between the diverging sections of the first air chamber 11 and the second air chamber 12 and the sides of the third air chamber 21 and the fourth air chamber 22 facing the human body, forming a space resembling a rhombus. During forward collision, the head of a human body can sink into the first protection space 3 forwards under the working condition of no safety belt load, and the first protection space 3 provides enough buffer space for the head and the neck of the human body.

Since the protective plenum 2 includes two plenums, it is capable of performing well under both the conditions of 90OMDB (90 Km/h Oblique Moving Deformation Barrier,90Km/h tilt movement deformation barrier) and 64SOB (64 Km/h Small Overlap Barrier ).

Alternatively, the shape of the first protection space 3 is not limited to the pattern of the present embodiment.

Alternatively, when the width of the third air cell 21 and the fourth air cell 22 in the left-right direction of the vehicle body is sufficient, the first air cell 11 and the second air cell 12 may be further connected to the top of the third air cell 21 and the fourth air cell 22 after being branched.

Further, as shown in fig. 1 and 3, the first air cell 11 and the second air cell 12 are each circular tube-shaped, and extend downward from the roof along the windshield 40 when deployed.

The first air chamber 11 and the second air chamber 12 extend obliquely downward and forward from the roof along the windshield 40 toward the instrument panel. This deployment path facilitates rapid deployment of the first and second air cells 11, 12. After the first air chamber 11 and the second air chamber 12 are unfolded, the upper surface of the air chamber is abutted against the windshield 40, and the air chamber 2 can be stably supported by means of the windshield 40.

Alternatively, the first air chamber 11 and the second air chamber 12 may also be oblate tubular, or rectangular tubular.

Further, as shown in fig. 1, the lower ends of the first air cell 11 and the second air cell 12 are unfolded to collide with the instrument panel, and the middle sections of the first air cell 11 and the second air cell 12 are communicated with the third air cell 21 and the fourth air cell 22.

The lower ends of the first air chamber 11 and the second air chamber 12 are unfolded to collide with the instrument panel, and the first air chamber 11 and the second air chamber 12 are kept between the roof and the instrument panel, so that the function of stably supporting the protection air chamber 2 can be achieved.

Further, a first air inlet is arranged between the middle section of the first air chamber 11 and the third air chamber 21, and a second air inlet is arranged between the middle section of the second air chamber 12 and the fourth air chamber 22.

Specifically, the first air chamber 11 is inflated toward the third air chamber 21 through the first air intake hole, and the second air chamber 12 is inflated toward the fourth air chamber 22 through the second air intake hole. The third air chamber 21 and the fourth air chamber 22 are communicated with each other again, so that the whole air bag can be inflated and deployed rapidly.

Further, as shown in fig. 1 and 5, a circle of sewing thread 4 at the inner side connection of the third air cell 21 and the fourth air cell 22 is located on the vertical plane, and the length of the sewing thread 4 is smaller than the maximum circumferences of the third air cell 21 and the fourth air cell 22.

Specifically, the sewing thread 4 is a closed loop between the third air chamber 21 and the fourth air chamber 22.

The third air cells 21 and the fourth air cells 22 are unfolded, resemble a bulged bread shape, and are arranged in the vertical direction. The maximum circumference of the third air cell 21 and the fourth air cell 22 along the vertical plane is greater than the length of the sewing thread 4 therebetween.

Thus, a concave structure is formed at the side of the first protection space 3 facing the human body 100 at the third air cell 21 and the fourth air cell 22, and a diamond-like space is formed between the concave structure and the branched ends of the first air cell 11 and the second air cell 12.

When the head of the human body is pushed forward, the head is caught in this concave structure while being supported by the bifurcated ends of the first and second air cells 11 and 12. Not only plays a role of buffering the head and the neck, but also can prevent the head from passing through the first protection space 3 from back to front.

Further, as shown in fig. 5, a connecting piece 5 is further arranged at the connection position of the inner sides of the third air chamber 21 and the fourth air chamber 22, a plurality of vent holes 51 are formed in the connecting piece 5, the vent holes 51 are communicated with the third air chamber 21 and the fourth air chamber 22, and the edge of the connecting piece 5 is connected with the third air chamber 21 and the fourth air chamber 22 in a sewing mode to form a sewing thread 4.

The plurality of vent holes 51 can balance the air pressure between the third air chamber 21 and the fourth air chamber 22, and maintain the expansion of the third air chamber 21 and the fourth air chamber 22 as simultaneously as possible.

Alternatively, the vent holes 51 on the connection piece 5 may be provided as one, or two or more.

Alternatively, the connecting piece 5 may not be provided, and the third air chamber 21 and the fourth air chamber 22 may be opened inside and connected by the sewing thread 4.

Further, as shown in fig. 2, a second protection space 6 is left between the support air chamber 1 and the protection air chamber 2 at a side far from the human body 100, and the second protection space 6 is used for reducing the injury to children.

Specifically, the support air chamber 1 comprises a first air chamber 11 and a second air chamber 12, wherein the upper ends of the first air chamber 11 and the second air chamber 12 are connected together and are respectively connected with the outer side of the protection air chamber 2 after being branched from the upper end;

the lower ends of the first air chamber 11 and the second air chamber 12 and the protective air chamber 2 leave a second protective space 6 at a side far from the human body 100.

The second protection space 6 is located near one side of the vehicle head, the lower ends of the first air chamber 11 and the second air chamber 12 are used for defining the left and right boundaries of the second protection space 6, the protection air chamber 2 is used for defining the rear boundary of the second protection space 6, the upper boundary of the second protection space 6 is a windshield 40, and the front boundary is an instrument panel.

Since the second protection space 6 is located at the front side of the protection air chamber 2, the human body 100 collides with the protection air chamber 2 in the forward collision, and the protection air chamber 2 has a large reaction force to the human body 100 while buffering. The second protection space 6 can increase the cushioning property of the protection air chamber 2, and the protection air chamber 2 can be deformed toward the second protection space 6.

Therefore, the reaction force of the protection air chamber 2 to the children aged 3-6 can be reduced when the child Tong Liwei works (OOP), and serious injury is avoided.

The invention also provides an automobile, which comprises a roof and an instrument panel, and further comprises an airbag 10 at the top of the front row seat head of the automobile, wherein the upper end of the supporting air chamber 1 is connected with a gas generator.

The front seat head airbag 10 of the automobile in this embodiment is mounted on the roof of the passenger for protecting the passenger of the passenger.

In the united states market, copilot allows children who are 3-6 years old to sit. Thus, providing the second protection space 6 in the front seat head airbag 10 of the automobile can be adapted to the requirements of the U.S. market. Meanwhile, the safety belt is also suitable for the protection of adults under the working condition without a safety belt load in the Chinese market.

What has been described above is merely illustrative of the principles and preferred embodiments of the present invention. It should be noted that several other variants are possible to those skilled in the art on the basis of the principle of the invention and should also be considered as the scope of protection of the present invention.

Claims

1. The head top safety airbag of the front seat of the automobile is characterized by comprising a supporting air chamber and a protecting air chamber which are arranged on the roof of the automobile;

a first protection space is reserved between the support air chamber and the protection air chamber at one side facing the human body, and the first protection space corresponds to the head of the human body and is used for protecting the head and neck of the human body;

the support air chamber comprises a first air chamber and a second air chamber;

2. The vehicle front seat overhead airbag of claim 1, wherein the first and second air chambers are each tubular and extend downwardly from a roof along a windshield when deployed.

3. The vehicle front seat overhead airbag according to claim 2, wherein lower ends of the first air chamber and the second air chamber are expanded to collide with the instrument panel, and a middle section of the first air chamber and the second air chamber is communicated with the third air chamber and the fourth air chamber.

4. The head-mounted airbag for the front seat of the automobile according to claim 3, wherein a first air inlet hole is formed between the middle section of the first air chamber and the third air chamber, and a second air inlet hole is formed between the middle section of the second air chamber and the fourth air chamber.

5. The vehicle front seat overhead airbag according to claim 1, wherein a circle of sewing thread at the inner side connection of the third air chamber and the fourth air chamber is located on a vertical plane, and a length of the sewing thread is smaller than a maximum circumference of the third air chamber and the fourth air chamber.

6. The head-mounted airbag for the front seat of the automobile according to claim 5, wherein a connecting piece is further arranged at the inner side connection part of the third air chamber and the fourth air chamber, a plurality of vent holes are formed in the connecting piece, the vent holes are communicated with the third air chamber and the fourth air chamber, and the edge of the connecting piece is in sewing connection with the third air chamber and the fourth air chamber to form the sewing thread.

7. The head restraint of claim 1, wherein a second protective space is left between the support air chamber and the protective air chamber on a side remote from the human body, the second protective space being for reducing injury to the child.

8. The front seat head airbag according to claim 7, wherein,

9. An automobile comprising a roof and an instrument panel, further comprising an automobile front seat head airbag according to any one of claims 1 to 8, wherein the upper end of the support air chamber is connected to a gas generator.